diff --git a/Cargo.toml b/Cargo.toml
index 578656f..59ddb31 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "zaif-api"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["yajamon <yajamon.tatsuki@gmail.com>"]
 
 license = "MIT"